Interstellar comet 3I/ATLAS reveals ancient secrets and strange chemistry as the largest object of its kind ever tracked.

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

3I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar ...

Did an alien spacecraft just fly by Earth? That’s the question a lot of people, including Harvard astrophysicist Avi Loeb, are asking right now. A massive interstellar object called 3I/ATLAS which ...

Space watchers already had 3I/ATLAS flagged as a curiosity. Heck, we only just recently reported that certain folks might think it houses teensy alien robot spiders. Now, a high-profile astrophysicist ...

The debate about 3I/ATLAS, a mysterious interstellar object that is currently passing through the Solar System, boils down to "Is it a comet?" versus "Is it maybe just possibly an alien spaceship or ...

Alien probes could be hiding among us in plain sight as we search for them in the wrong places. This is the theory of professor Alex Ellery of Carleton University who argues that if self-replicating ...